Earth Mat Flashcards - Common Gems

Question 1

CaCO3

Answer 1

Aragonite (Pearls)

Question 2

Be Al2 (Si6 O18 )

Answer 2

Beryl

Question 3

Beryl varieties

Answer 3

Emerald (green)
Aquamarine (Blue)
Heliodore (yellow)

Question 4

BeAl2O4

Answer 4

Chrysoberyl

Question 5

Chrysoberyl varieties

Answer 5

Alexandrite (green by day, red by night),
Cat’s eye (yellow – green – brown)

Question 6

Cu4H4O10 (OH)8

Answer 6

Chrysocolla

Question 7

Al2O3

Answer 7

Corundum

Question 8

Corundum varieties

Answer 8

Ruby (red), sapphire (blue)

Question 9

Andradite gem

Answer 9

Demantroid

Question 10

Grossular gem

Answer 10

Hessonite

Question 11

NaAlSi2O6

Answer 11

Jadeite

Question 12

(Na,Ca)8 (AlSiO4)6 (SO4, S,Cl)2

Answer 12

Lazurite

Question 13

Lazurite with calcite and px

Answer 13

Lapis Lazuli

Question 14

Cu2CO3(OH)2

Answer 14

Malachite

Question 15

KalSi3O8

Answer 15

Microline

Question 16

Microcline gem

Answer 16

Amazonite

Question 17

Olivine gem

Answer 17

Peridot

Question 18

Iridescent plag? Opalesque? Golden Shine?

Answer 18

Labradorite; Moonstone; Sunstone

Question 19

Banded chalcedony

Answer 19

Agate

Question 20

Mint green qtz

Answer 20

aventurine

Question 21

Red chert

Answer 21

jasper

Question 22

Green chalcedony

Answer 22

chrysoprase

Question 23

mottled gray qtz

Answer 23

moss agate

Question 24

layerd chalcedony

Answer 24

onyx

Question 25

MnCO3

Answer 25

Rhodochrosite

Question 26

Na4(AlSiO4)3Cl

Answer 26

Sodalite

Question 27

MgAl2O4

Answer 27

Spinel

Question 28

Al2SiO4(F,OH)2

Answer 28

Topaz

Question 29

(Na,Ca)(Li,Mg,Al)(Al,Fe,Mn)6(BO3)3(Si6O18)(OH)4

Answer 29

Tourmaline

Question 30

Ca2Mg5Si8O22(OH)2

Answer 30

Tremolite-actinolite

Question 31

Tremolite-actinolite gem

Answer 31

Nephrite Jade

Question 32

CuAl6(PO4)4(OH)8·4H2O

Answer 32

Turquoise

Question 33

Ca2Al3(Si3O12)(OH)

Answer 33

Zoisite

Question 34

Violet blue variety of zoisite

Answer 34

Tanzanite